calculate the ratio of wavelength o mth line of lyman series and balmer series of H-atom
12 years ago
11 months ago
To calculate the ratio of the wavelengths of the mth line of the Lyman series and the Balmer series of a hydrogen atom, we first need to understand some basic concepts.
1. Lyman series: The Lyman series consists of spectral lines of hydrogen that are obtained when an electron transitions from higher energy levels to the lowest energy level (n=1). The formula to calculate the wavelength of the mth line in the Lyman series is given by:
λ = R(1/1^2 - 1/m^2), where R is the Rydberg constant.
2. Balmer series: The Balmer series consists of spectral lines of hydrogen that are obtained when an electron transitions from higher energy levels to the second energy level (n=2). The formula to calculate the wavelength of the mth line in the Balmer series is given by:
λ = R(1/2^2 - 1/m^2), where R is the Rydberg constant.
Now, let's calculate the ratio:
Ratio = (wavelength of mth line in Lyman series) / (wavelength of mth line in Balmer series)
Substituting the formulas for the wavelengths:
Ratio = [R(1/1^2 - 1/m^2)] / [R(1/2^2 - 1/m^2)]
Simplifying the equation:
Ratio = [(1/1^2 - 1/m^2)] / [(1/2^2 - 1/m^2)]
Ratio = [(m^2 - 1) / m^2 ] / [(4 - 1) / 4]
Ratio = [4(m^2 - 1) / m^2] / 3
Therefore, the ratio of the wavelengths of the mth line of the Lyman series to the Balmer series is [4(m^2 - 1) / 3m^2].